On December 31, 2003, the Swiss Patent Office issued a patent certificate for the invention of the tourbillon to a Chinese for the first time, and its recipient was Jiao Dayu.
In fact, as early as 1990, he had successfully trial-produced his first tourbillon watch, becoming the first creator of tourbillon watches in China and the East, and pioneering the tourbillon watch manufacturing industry in China and the East. history.